[CentOS] High load averages copying USB

Fri Apr 20 12:24:35 UTC 2012
Giovanni Tirloni <gtirloni at sysdroid.com>

On Apr 20, 2012 2:42 AM, "Lists" <lists at benjamindsmith.com> wrote:
> Problem as follows:
> 1) Plug in an external USB drive.
> 2) Mount it anywhere. Doesn't matter how.
> 3) Copy a few GB of data to the drive from a non-USB disk.
> 4) Watch the load average "climb" to 5.x, sometimes 10.x or more. Why?
> This on an otherwise unloaded system. Doesn't matter how many cores, how
> much RAM, 32/64 bit, etc.
> Why should copying some files to a USB drive cause load averages to
> climb so high? (and network monitors to freak out?)

It's just a number. Is the system any slower?

Linux adds I/O wait time to the load average calculation.